Troubled Debt Restructurings (Narrative) (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Investments	Dec. 31, 2018 USD ($) Investments
Troubled Debt Restructurings (Textual)
Total number of loans classified under troubled debt restructurings (TDRs) | Investments		20	26
Total sum of loans classified as troubled debt restructurings (TDRs) | $		$ 8,600	$ 9,300
Number of months previous loan payment defaulted		12 months	12 months
Commercial Loan [Member] | Owner occupied RE [Member] | Real Estate Loan [Member]
Troubled Debt Restructurings (Textual)
Total number of loans classified under troubled debt restructurings (TDRs) | Investments		1
Pre-modification and post-modification balance of loan | $	$ 1,300